Season
- Season 0 2009-03-08
- Season 1 2010-04-20
- Season 2 2010-10-28
- Season 3 2011-07-28
- Season 4 2012-02-17
- Season 5 2012-12-21
- Season 6 2013-09-30
- Season 7 2014-01-24
- Season 8 2014-06-13
- Season 9 2014-10-31
- Season 10 2015-07-24
- Season 11 2016-05-06
- Season 12 2017-04-28
- Season 13 2018-04-27
- Season 14 2019-05-31
- Season 15 2020-01-25
- Season 16 2020-11-13
- Season 17 2021-08-06
- Season 18 2022-01-07
- Season 19 2023-01-06
- Season 20 2024-01-05
- Season 21 2025-02-07
Season 21 Episode
- Season 13 The UFO Conspiracy
- Season 13 Da Vinci's Forbidden Codes
- Season 13 The Alien Protocols
- Season 13 Earth's Black Holes
- Season 13 The Desert Codes
- Season 13 Area 52
- Season 13 Earth Station Egypt
- Season 13 Island of the Giants
- Season 13 The Taken
- Season 13 The Sentinels
- Season 13 Russia Declassified
- Season 13 They Came From the Sky
- Season 13 The Artificial Human
- Season 13 The Alien Phenomenon
- Season 13 Return to Mars
Ancient Aliens - Season 13 Episode 2 Da Vinci's Forbidden Codes
7.00 42 minutes Researchers claim there are hidden messages that can be found within the works of Leonardo da Vinci--and other art throughout history--that may reveal an extraterrestrial influence.
